What color is #3C4C5D?

#3C4C5D is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(60, 76, 93), and in HSL hsl(211, 22%, 30%).

Is #3C4C5D accessible as text?

On white, #3C4C5D has a contrast ratio of 8.81:1 (passes WCAG AA for body text); on black it is 2.38:1 (fails). For text placed on #3C4C5D, use white for the best readability.

What is the closest Tailwind color to #3C4C5D?

The nearest Tailwind CSS token is slate-600 (#45556C).

What colors go well with #3C4C5D?

As a neutral, #3C4C5D pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #3C4C5D the same as CSS darkslategray?

No — #3C4C5D is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#3C4C5D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3C4C5D

Not just a swatch — here's how #3C4C5D works with other colors. Named schemes with #3C4C5D in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3C4C5D Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Outer Space opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #3C4C5D Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Outer Space keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #3C4C5D Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #5E6D7E

Outer Space is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Outer Space.

Vintage Leather Lead · 5 colors

Lead #3C4C5D Secondary #7F4538 Surface #E1DDC0 Accent #375245 Anchor #57233B

Outer Space plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #3C4C5D Secondary #6C7279 Support #959386 Ink #16140F

Outer Space is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Outer Space carrying the quiet middle.

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Color Lab

How #3C4C5D actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 40/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 42/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 56/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 14/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 50/100

Moderate

Workable accent with care around contrast.

Surface fit 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3C4C5D

For UI

For branding

For interior

For fashion

People also use #3C4C5D with

Myrtle Green Charcoal Umber Gainsboro

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 8.8:1. Use

Subtle surface Use #D6DBE1 for cards and hover fills. Tint 80

Avoid beside #3C415D — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #3C4C5D at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #3C4C5D;
  --color-base-rgb: 60 76 93;
  --color-base-oklch: oklch(41.0% 0.035 250.2);
  --color-50: #F6F7F9;
  --color-100: #E6EAEF;
  --color-200: #CDD6DF;
  --color-300: #A9B7C6;
  --color-400: #8798AB;
  --color-500: #677A8E;
  --color-600: #53606F;
  --color-700: #3F4750;
  --color-800: #2B3036;
  --color-900: #1C1F22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  outer-space: {
    50: '#F6F7F9',
    100: '#E6EAEF',
    200: '#CDD6DF',
    300: '#A9B7C6',
    400: '#8798AB',
    500: '#677A8E',
    600: '#53606F',
    700: '#3F4750',
    800: '#2B3036',
    900: '#1C1F22',
  },
}

$base: #3C4C5D;
$base-ink: #FFFFFF;
$base-50: #F6F7F9;
$base-100: #E6EAEF;
$base-200: #CDD6DF;
$base-300: #A9B7C6;
$base-400: #8798AB;
$base-500: #677A8E;
$base-600: #53606F;
$base-700: #3F4750;
$base-800: #2B3036;
$base-900: #1C1F22;
$base-hover: #303D4B;
$base-subtle: #C0C9D2;

{
    "color": {
        "base": {
            "value": "#3C4C5D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F7F9",
                "type": "color"
            },
            "100": {
                "value": "#E6EAEF",
                "type": "color"
            },
            "200": {
                "value": "#CDD6DF",
                "type": "color"
            },
            "300": {
                "value": "#A9B7C6",
                "type": "color"
            },
            "400": {
                "value": "#8798AB",
                "type": "color"
            },
            "500": {
                "value": "#677A8E",
                "type": "color"
            },
            "600": {
                "value": "#53606F",
                "type": "color"
            },
            "700": {
                "value": "#3F4750",
                "type": "color"
            },
            "800": {
                "value": "#2B3036",
                "type": "color"
            },
            "900": {
                "value": "#1C1F22",
                "type": "color"
            }
        }
    }
}

Palettes built on #3C4C5D

Color Lab

Pairs with #3C4C5D

UI roles & guardrails

In real applications

Scales

Every model

Export